diff --git a/Cargo.lock b/Cargo.lock
index 227f917..4541d73 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "actix"
@@ -421,9 +421,9 @@ checksum = "76a2e8124351fda1ef8aaaa3bbd7ebbcb486bbcd4225aca0aa0d84bb2db8fecb"
 
 [[package]]
 name = "arrayvec"
-version = "0.5.2"
+version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
+checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
 
 [[package]]
 name = "ascii"
@@ -608,9 +608,9 @@ dependencies = [
 
 [[package]]
 name = "blake2b_simd"
-version = "0.5.11"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afa748e348ad3be8263be728124b24a24f268266f6f5d58af9d75f6a40b5c587"
+checksum = "06e903a20b159e944f91ec8499fe1e55651480c541ea0a584f5d967c49ad9d99"
 dependencies = [
  "arrayref",
  "arrayvec",
@@ -838,9 +838,9 @@ checksum = "c2459377285ad874054d797f3ccebf984978aa39129f6eafde5cdc8315b612f8"
 
 [[package]]
 name = "constant_time_eq"
-version = "0.1.5"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
+checksum = "7c74b8349d32d297c9134b8c88677813a227df8f779daa29bfc29c183fe3dca6"
 
 [[package]]
 name = "convert_case"
@@ -3645,14 +3645,13 @@ dependencies = [
 
 [[package]]
 name = "rust-argon2"
-version = "0.8.3"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b18820d944b33caa75a71378964ac46f58517c92b6ae5f762636247c09e78fb"
+checksum = "9d9848531d60c9cbbcf9d166c885316c24bc0e2a9d3eba0956bb6cbbd79bc6e8"
 dependencies = [
- "base64 0.13.1",
+ "base64 0.21.7",
  "blake2b_simd",
  "constant_time_eq",
- "crossbeam-utils",
 ]
 
 [[package]]
diff --git a/crates/auth/Cargo.toml b/crates/auth/Cargo.toml
index 3221300..06dd932 100644
--- a/crates/auth/Cargo.toml
+++ b/crates/auth/Cargo.toml
@@ -17,7 +17,7 @@ sea_orm = ["dep:sea-orm"]
 test = []
 
 [dependencies]
-rust-argon2 = "0.8"
+rust-argon2 = "2"
 curve25519-dalek = "3"
 digest = "0.9"
 generic-array = "0.14"
diff --git a/crates/auth/src/opaque.rs b/crates/auth/src/opaque.rs
index a2dfa39..84233fa 100644
--- a/crates/auth/src/opaque.rs
+++ b/crates/auth/src/opaque.rs
@@ -32,7 +32,6 @@ impl ArgonHasher {
         lanes: 1,
         mem_cost: 50 * 1024, // 50 MB, in KB
         secret: &[],
-        thread_mode: argon2::ThreadMode::Sequential,
         time_cost: 1,
         variant: argon2::Variant::Argon2id,
         version: argon2::Version::Version13,